Describe the endothermic and exothermic reactions in terms
a. Describe the endothermic and exothermic reactions in terms of the sign of ΔH.
b. Discuss how much heat was lost if a 625-ml sample of water was cooled from 50.0 C to 10.0C.
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An object of 3.38 kg is joined to a 2.28 m long string and swung in the vertical circle at a constant speed of 14.6 m/s. Determine the tension force if the object is at the top of the loop?
Determine the volume of oxygen formed by the electrolysis of 67.0mL of water at the 23.°C and 1.0 atm, using the ideal gas approximation.
Determine the percentage of CO in the exhaust gases? ( where the air is 21% O2. regard H2O as a gas) Even in a well-tuned engine, the combustion of C8H18(l) forms about 1mol of CO(g) per mole of C8H18.
An inductor and a resistor are joined in series across the AC generator. i) Instantly after the switch is closed. Determine the voltage across the resistor?
Describe the endothermic and exothermic reactions in terms of the sign of ΔH. Discuss how much heat was lost if a 625-ml sample of water was cooled from 50.0 C to 10.0C.
Determine temperature of water after three hours, where t is in minutes, c is temperature surrounding cooling object and a and k are constants.
Avoid friction between the bearings and the shaft of the merry-go-round. (i) Compute the rotational inertia of the merry-go-round about its axis of the rotation.
Determine the numbers of joules are needed to change the temperature of 60.0g of water from the 23.3 C to 38.8 C?
A radio employs a LC parallel circuit to tune to a station. The frequency of the station is around760 kilo-Hertz; determine the value of the inductor when a capacitor of 200 pico-Farads is employed.
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